package com.atguigu.eduorder.service.impl;

import com.alibaba.fastjson.JSONObject;
import com.atguigu.eduorder.entity.Order;
import com.atguigu.eduorder.entity.PayLog;
import com.atguigu.eduorder.mapper.PayLogMapper;
import com.atguigu.eduorder.service.OrderService;
import com.atguigu.eduorder.service.PayLogService;
import com.atguigu.eduorder.utils.ConstantWxUtils;
import com.atguigu.eduorder.utils.HttpClient;
import com.atguigu.exceptionhandler.GuliException;
import com.baomidou.mybatisplus.core.conditions.query.QueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.github.wxpay.sdk.WXPayUtil;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.math.BigDecimal;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

/**
 * <p>
 * 支付日志表 服务实现类
 * </p>
 *
 * @author wxc
 * @since 2021-07-12
 */
@Service
public class PayLogServiceImpl extends ServiceImpl<PayLogMapper, PayLog> implements PayLogService {

    @Autowired
    private OrderService orderService;

    /**
     * 生成二维码，返回二维码地址，还有其他信息
     *
     * @param orderNo
     **/
    @Override
    public Map<String, Object> createNative(String orderNo) {
        try{
            //1、根据订单号查询订单信息
            QueryWrapper<Order> wrapper = new QueryWrapper<>();
            wrapper.eq("order_no", orderNo);
            Order order = orderService.getOne(wrapper);

            //2、使用map设置生成二维码需要的参数
            Map m = new HashMap();
            m.put("appid", ConstantWxUtils.WX_PAY_APP_ID);  //appid
            m.put("mch_id", ConstantWxUtils.WX_PAY_PARTNER);    //商户号
            m.put("nonce_str", WXPayUtil.generateNonceStr());   //微信的随机数
            m.put("body", order.getCourseTitle());  //课程标题
            m.put("out_trade_no", orderNo); //订单号
            m.put("total_fee", order.getTotalFee().multiply(new
                    BigDecimal("100")).longValue()+""); //订单金额
            m.put("spbill_create_ip", "127.0.0.1");
            m.put("notify_url", "http://guli.shop/api/order/weixinPay/weixinNotify");
            m.put("trade_type", "NATIVE");

            //3、发送HttpClient请求，传递参数xml格式，微信支付提供的固定地址
            HttpClient client = new HttpClient("https://api.mch.weixin.qq.com/pay/unifiedorder");
            client.setXmlParam(WXPayUtil.generateSignedXml(m, ConstantWxUtils.WX_PAY_PARTNER_KEY));
            client.setHttps(true);
            //执行post请求发送
            client.post();

            //4、得到发送请求返回结果
            //返回的内容，是使用xml格式返回
            String content = client.getContent();

            //5、把xml格式转换为map集合，把map集合返回
            Map<String, String> resultMap = WXPayUtil.xmlToMap(content);

            //6、封装返回结果集
            Map map = new HashMap<>();
            map.put("out_trade_no", orderNo);   //订单号
            map.put("course_id", order.getCourseId());  //课程号
            map.put("total_fee", order.getTotalFee());  //金额
            //返回二维码返回的操作状态码
            map.put("result_code", resultMap.get("result_code"));
            //二维码地址
            map.put("code_url", resultMap.get("code_url"));

            return map;
        }catch (Exception e){
            e.printStackTrace();
            throw new GuliException(20001, "生成二维码失败");
        }

    }

    /**
     * 根据订单号，查询订单支付状态
     *
     * @param orderNo
     **/
    @Override
    public Map<String, String> queryPayStatus(String orderNo) {

        try{
            //1、封装参数
            Map m = new HashMap<>();
            m.put("appid", ConstantWxUtils.WX_PAY_APP_ID);
            m.put("mch_id", ConstantWxUtils.WX_PAY_PARTNER);
            m.put("out_trade_no", orderNo);
            m.put("nonce_str", WXPayUtil.generateNonceStr());

            //2、发送你HttpClient请求
            HttpClient client = new HttpClient("https://api.mch.weixin.qq.com/pay/orderquery");
            client.setXmlParam(WXPayUtil.generateSignedXml(m, ConstantWxUtils.WX_PAY_PARTNER_KEY));
            client.setHttps(true);
            client.post();

            //得到请求返回的内容
            String xml = client.getContent();

            //3、转成Map
            Map<String, String> resultMap = WXPayUtil.xmlToMap(xml);

            //4、返回
            return resultMap;

        }catch (Exception e){
            e.printStackTrace();
            return null;
        }
    }

    /**
     * 向支付日志表添加记录，更新订单状态
     *
     * @param map
     **/
    @Override
    public void updateOrderStatus(Map<String, String> map) {
        //从map中获取订单号
        String orderNo = map.get("out_trade_no");

        //根据订单号，查询订单信息
        QueryWrapper<Order> wrapper = new QueryWrapper<>();
        wrapper.eq("order_no", orderNo);
        Order order = orderService.getOne(wrapper);

        //更新订单表中订单的状态
        if(order.getStatus() == 1){return;}
        order.setStatus(1); //1代表已支付
        orderService.updateById(order);

        //向订单日志表中添加订单的详情信息
        PayLog payLog = new PayLog();
        payLog.setOrderNo(orderNo); //订单号
        payLog.setPayTime(new Date());  //支付完成时间
        payLog.setPayType(1);   //支付类型 1代表微信
        payLog.setTotalFee(order.getTotalFee());    //总金额(分)
        payLog.setTradeState(map.get("trade_state"));   //支付状态
        payLog.setTransactionId(map.get("transaction_id"));     //订单流水号
        payLog.setAttr(JSONObject.toJSONString(map));   //支付完成后的其他信息

        baseMapper.insert(payLog);
    }
}
